Misfire and idling issues

[Balistik53]

Was reversing the other day and my 07 Denali shut off ever since then it turns on but misfires really bad can’t go past 25 mph threw a crankshaft position sensor code and misfire code changed the crankshaft sensor and now it turns and can drive but really sluggish and pops on take off tried doing a relearn but can’t get past the start and idle loading screen on my obd 2 scanner any ideas ??

 

[Doubeleive]

Parking brake has to be set in order to do the relearn

 

[OR VietVet]

Still have the misfire code? What cylinder?